External links and sources

Here is the list of links and sources I used in and for my blog:

OpenStreetMap:
https://www.openstreetmap.org/
Google Maps:
https://www.google.it/maps
Google Maps license:
http:/www.google.com/permissions/geoguidelines.html
OpenStreetMap license:
http://www.openstreetmap.org/copyright
Google Maps API key:
https://developers.google.com/maps/documentation/javascript 
Google Maps API example 1:
https://developers.google.com/maps/documentation/javascript/examples/map-simple
Google Maps API more examples:
https://developers.google.com/maps/documentation/javascript/examples/?hl=de
Google Maps API example 2:
https://developers.google.com/maps/documentation/javascript/examples/marker-labels
Google Maps API example 3:
https://developers.google.com/maps/documentation/javascript/examples/marker-remove
Google Maps API example 4:
https://developers.google.com/maps/documentation/javascript/examples/polyline-simple
Google Maps API example 5:
https://developers.google.com/maps/documentation/javascript/examples/circle-simple
Leaflet:
http://www.leafletjs.com/
Leaflet documantation:
http://leafletjs.com/reference-1.0.3.html
Leaflet tutorial:
http://leafletjs.com/examples/quick-start/ 
Leaflet routing machine:
http://www.liedman.net/leaflet-routing-machine/tutorials/basic-usage/

These are all the links I used both in my blog, and also to gain the knowledge of how to implement the project myself.

All images without source are either taken from my project or from the example it refers to, in which case I have already added the hyperlink to the respective example.